| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -9.8 | 132 |
| 2015 | 12.96 | 7 |
| 2014 | -2.31 | 152 |
| 2013 | 17.82 | 10 |
| 2012 | -7.84 | 155 |
| 2011 | 6.66 | 46 |
| 2010 | 1.11 | 88 |
| 2009 | 23.95 | 3 |
| 2008 | 18.62 | 15 |
| 2007 | -20.02 | 167 |
| 2006 | 21.07 | 3 |
| 2005 | -11.1 | 162 |
| 2004 | 4.47 | 72 |
| 2003 | 20.31 | 3 |
| 2002 | 4.28 | 53 |
| 2001 | 19.06 | 5 |
| 2000 | -12.16 | 151 |
| 1999 | -14.68 | 155 |
| 1998 | 26.82 | 2 |
| 1997 | -22.89 | 158 |
| 1996 | 73.58 | 1 |
| 1995 | -41.01 | 139 |
| 1994 | 59.76 | 1 |
| 1993 | -6.32 | 113 |
| 1992 | -34.24 | 131 |
| 1991 | 21.75 | 2 |
| 1990 | -6.66 | 103 |
| 1989 | 6.37 | 25 |
| 1988 | 33.43 | 4 |
| 1987 | -23.53 | 109 |
| 1986 | 34.2 | 2 |